(CNN) -- Reality TV star and former model Anna Nicole Smith was pronounced dead Thursday after being taken to a Florida hospital after being found unconscious in her hotel room, a law enforcement source with knowledge of the case told CNN.

Smith, 39, collapsed at a south Florida hotel and was taken to a local hospital, according to news reports.

TMZ.com had reported that Smith collapsed at the Seminole Hard Rock Hotel and Casino in Hollywood, Florida, and was rushed to Memorial Regional Hospital in Hollywood just after 2 p.m. ET.

According to reports, Smith was found unresponsive in her hotel room.

Smith was involved in paternity suit regarding the parentage of her daughter, Danielynn, as well as other disputes, including ones regarding a house she stayed at in the Bahamas around the time she gave birth.

Earlier this week, Smith was included in a class-action lawsuit against a company, TrimSpa, for which she has worked as a spokesperson. TrimSpa makes a product it claims leads to substantial weight loss. The lawsuit alleges the marketing of the product, TrimSpa X32, was false or misleading.

Smith's son, Daniel Wayne Smith, died at age 20 just days after the birth of Smith's daughter. Pathologist Cyril Wecht said a lethal dose of methadone and antidepressants caused cardiac dysrhythmia, leading to his death.